From the figure of column chromatography give | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) In column chromatography,the stationary phase is typically polar (e.g.,silica gel).The compound that is least polar moves faster and elutes first,

Vedclass · Accepted Answer

$A, B$ and $C$ only

Vedclass · Answer

(A) In column chromatography,the stationary phase is typically polar (e.g.,silica gel).The compound that is least polar moves faster and elutes first,while the most polar compound moves slower and elutes last.Based on the figure,compound '$a$' is at the top,'$b$' is in the middle,and '$c$' is at the bottom (closest to the exit).Therefore,the order of elution is '$c$' (first),then '$b$',then '$a$' (last).This implies that '$c$' is the least polar and '$a$' is the most polar.Let's evaluate the statements:$A.$ '$c$' is more polar than '$a$' and '$b$': Incorrect,'$c$' is the least polar.$B.$ '$a$' is least polar: Incorrect,'$a$' is the most polar.$C.$ '$b$' comes out of the column before '$c$' and after '$a$': Incorrect,'$c$' comes out first,then '$b$',then '$a$.'$D.$ '$a$' spends more time in the column: Correct,as it is the most polar and interacts most strongly with the stationary phase.The incorrect statements are $A, B,$ and $C$.

Item $I$	Item $II$
$a$. Benzaldehyde	$p$. Mobile phase
$b$. Alumina	$q$. Adsorbent
$c$. Acetonitrile	$r$. Adsorbate

Similar Questions

Thin-layer chromatography is an example of

Give the difference between paper chromatography and thin layer chromatography.

$A$ liquid with a high boiling point decomposes on simple distillation,but it can be steam distilled for its purification. Explain how this is possible.

The correct match between Item $I$ and Item $II$ is

Item $I$ Item $II$

$a$. Benzaldehyde $p$. Mobile phase

$b$. Alumina $q$. Adsorbent

$c$. Acetonitrile $r$. Adsorbate

Explain the principle of paper chromatography.

Vedclass Test Series

Exam Paper Generator

Online Exam Module